যদি একটি 4-পোল ইন্ডাকশন মোটরের গতি 1800 rpm হয়, তাহলে মোটরটি যে কোম্পানিকে কাজ করছে তা হল:

This question was previously asked in
ALP CBT 2 Electrician Official Paper (Held On: 23 Jan 2019 Shift 3)
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  1. 60 হার্টজ 
  2. 40 হার্টজ 
  3. 30 হার্টজ 
  4. 50 হার্টজ 

Answer (Detailed Solution Below)

Option 1 : 60 হার্টজ 
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Detailed Solution

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অনুসৃত ধারণা:

সিনক্রোনাস স্পীড দেওয়া হয়

\({N_s} = \frac{{120f}}{P}\)

যেখানে,

f = হার্টজে সরবরাহের কম্পাঙ্ক 

P = মেরুর সংখ্যা

Ns = rpm-এ সিঙ্ক্রোনাস গতিবেগ 

গণনা:

প্রদত্ত -

Ns = 1800 rpm, P = 4

\(\therefore {1800} = \frac{{120 \times f}}{{4}}\)

f = 60 হার্টজ 

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